Good planning kept Nasdaq running during attacks

Network World Fusion has a story on how Nasdaq's network stayed up during the attacks on New York Sept. 11. "All of the trading information is monitored and put into repositories for market
regulation, where suspect behavior can be researched. A 20-50T byte on-line
Oracle database provides the holding tank for that information. That database
resides on a Sequent server that runs a BSD derivative operating system."